plotter: EventPlot: Scroll and PAN zoom + window Zoom
plotter: EventPlot: Scroll and PAN zoom + window Zoom

Change-Id: I70c887ece05a66884b786676f85b5ab29e41e029
Signed-off-by: Kapileshwar Singh <d373e2b6407ea84be359ce4a11e8631121819e79@arm.com>

JaviMerino/trappy,joelagnel/trappy,bjackman/trappy,sinkap/trappy,JaviMerino/trappy,bjackman/trappy,bjackman/trappy,derkling/trappy,ARM-software/trappy,joelagnel/trappy,ARM-software/trappy,derkling/trappy,sinkap/trappy,joelagnel/trappy,ARM-software/trappy,ARM-software/trappy,JaviMerino/trappy,sinkap/trappy,bjackman/trappy,joelagnel/trappy,sinkap/trappy,derkling/trappy